{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/identity-provider/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:eclipse:jakarta_mail:*:*:*:*:*:*:*:*","cpe:2.3:a:eclipse:angus_mail:*:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":7.5,"id":"CVE-2025-7962"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Identity Provider","OpenSAML Java library"],"_cs_severities":["medium"],"_cs_tags":["shibboleth","denial-of-service","security-policy-bypass"],"_cs_type":"advisory","_cs_vendors":["Shibboleth"],"content_html":"\u003cp\u003eMultiple vulnerabilities have been identified in Shibboleth Identity Provider and OpenSAML Java library products. These vulnerabilities can be exploited by an attacker to trigger a remote denial of service (DoS) condition and bypass security policies. The vulnerabilities affect Identity Provider and OpenSAML Java library versions prior to 5.2.2. Successful exploitation could lead to disruptions in services relying on Shibboleth for authentication and authorization, potentially impacting access to critical resources. The vendor has released security advisories to address these issues, urging users to apply the necessary patches to mitigate the risks.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a vulnerable Shibboleth Identity Provider or OpenSAML Java library instance running a version prior to 5.2.2.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious request designed to exploit CVE-2025-7962 or other vulnerabilities.\u003c/li\u003e\n\u003cli\u003eThe malicious request is sent to the vulnerable Shibboleth component, potentially targeting a specific endpoint or function.\u003c/li\u003e\n\u003cli\u003eThe vulnerable component processes the request, triggering a denial-of-service condition or a security policy bypass.\u003c/li\u003e\n\u003cli\u003eIn a DoS attack, the server becomes unresponsive due to resource exhaustion, preventing legitimate users from accessing services.\u003c/li\u003e\n\u003cli\u003eIn a security policy bypass, the attacker gains unauthorized access to protected resources or functionalities.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the bypass to perform actions they are not authorized to do.\u003c/li\u003e\n\u003cli\u003eThe attacker may further compromise the system or network, depending on the scope of the bypassed security policy.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities could result in a denial of service, disrupting authentication and authorization services for users relying on Shibboleth. A security policy bypass could grant unauthorized access to sensitive resources and functionalities, potentially leading to data breaches or further system compromise. These vulnerabilities affect Identity Provider and OpenSAML Java library versions prior to 5.2.2.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Shibboleth Identity Provider and OpenSAML Java library to version 5.2.2 or later to remediate the vulnerabilities described in the vendor\u0026rsquo;s security advisories (\u003ca href=\"https://shibboleth.net/community/advisories/secadv_20260513.txt\"\u003ehttps://shibboleth.net/community/advisories/secadv_20260513.txt\u003c/a\u003e, \u003ca href=\"https://shibboleth.net/community/advisories/secadv_20260513a.txt\"\u003ehttps://shibboleth.net/community/advisories/secadv_20260513a.txt\u003c/a\u003e, \u003ca href=\"https://shibboleth.net/community/advisories/secadv_20260513b.txt)\"\u003ehttps://shibboleth.net/community/advisories/secadv_20260513b.txt)\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity and requests targeting Shibboleth endpoints, using webserver logs.\u003c/li\u003e\n\u003cli\u003eImplement rate limiting and input validation to mitigate potential denial-of-service attacks and security policy bypass attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-15T12:23:45Z","date_published":"2026-05-15T12:23:45Z","id":"https://feed.craftedsignal.io/briefs/2026-05-shibboleth-vulns/","summary":"Multiple vulnerabilities have been discovered in Shibboleth Identity Provider and OpenSAML Java library that allow an attacker to cause a remote denial of service and security policy bypass, addressed in versions 5.2.2 and later.","title":"Multiple Vulnerabilities in Shibboleth Products Leading to DoS and Security Policy Bypass","url":"https://feed.craftedsignal.io/briefs/2026-05-shibboleth-vulns/"},{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Identity Provider"],"_cs_severities":["medium"],"_cs_tags":["vulnerability","denial-of-service","smtp-injection"],"_cs_type":"advisory","_cs_vendors":["Shibboleth"],"content_html":"\u003cp\u003eThe Shibboleth Identity Provider is susceptible to multiple vulnerabilities that can be exploited by an attacker to achieve SMTP injection or trigger a denial-of-service (DoS) condition. While the specifics of the vulnerabilities are not detailed in this advisory, the potential impact on identity management systems highlights the importance of timely patching. The lack of detailed information on the exploitation vector makes creating specific detections challenging, but general monitoring of unusual activity related to the Shibboleth Identity Provider is recommended. Defenders should prioritize patching to mitigate the risks.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable Shibboleth Identity Provider instance.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious request targeting an endpoint susceptible to SMTP injection or DoS.\u003c/li\u003e\n\u003cli\u003eFor SMTP injection, the attacker injects arbitrary SMTP commands into an email sent by the Identity Provider.\u003c/li\u003e\n\u003cli\u003eThe injected commands are executed by the SMTP server, potentially allowing the attacker to send spam, phishing emails, or exfiltrate data.\u003c/li\u003e\n\u003cli\u003eAlternatively, for DoS, the attacker sends a specially crafted request that consumes excessive resources.\u003c/li\u003e\n\u003cli\u003eThe Identity Provider\u0026rsquo;s resources are exhausted, leading to a denial of service for legitimate users.\u003c/li\u003e\n\u003cli\u003eThe Identity Provider becomes unavailable, disrupting authentication and authorization processes.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities can lead to significant disruption of services relying on the Shibboleth Identity Provider. An SMTP injection attack could be used to send malicious emails, potentially damaging the reputation of the organization using the Identity Provider. A denial-of-service attack can prevent legitimate users from accessing resources and services, leading to business interruption and potential financial losses. The number of affected organizations is currently unknown.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the latest security patches for Shibboleth Identity Provider as soon as they are available from the vendor to remediate the vulnerabilities.\u003c/li\u003e\n\u003cli\u003eImplement rate limiting and input validation on all external-facing endpoints to mitigate potential DoS attacks.\u003c/li\u003e\n\u003cli\u003eMonitor logs for unusual SMTP traffic originating from the Identity Provider to detect potential SMTP injection attempts. Deploy the Sigma rule detecting SMTP injection attempts below.\u003c/li\u003e\n\u003cli\u003eMonitor system resource usage on the Identity Provider server to detect potential DoS attacks.\u003c/li\u003e\n\u003cli\u003eReview and harden the Identity Provider\u0026rsquo;s configuration to minimize the attack surface.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-15T11:38:30Z","date_published":"2026-05-15T11:38:30Z","id":"https://feed.craftedsignal.io/briefs/2026-05-shibboleth-idp-vulns/","summary":"Multiple vulnerabilities in Shibboleth Identity Provider allow an attacker to perform SMTP injection or cause a denial of service.","title":"Shibboleth Identity Provider Vulnerabilities Leading to SMTP Injection and Denial of Service","url":"https://feed.craftedsignal.io/briefs/2026-05-shibboleth-idp-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed — Identity Provider","version":"https://jsonfeed.org/version/1.1"}